Well-tool.



W. SGHILDWAGHTER. WELL TOOL.

APPLICATION FILED Imm, 1913.

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in the art to which -it appertains to makev UNITED sTATiis rPATENT OFFICE.

WILLIAM SCHILDWACHTER, OF WALWORTH, NEBRASKA.

WELL-TOOL.

To all whom it may concern Be it known that I, WILLIAM SoHiLD- WACHTER, a citizen of the United States, re siding at Walworth, in the county of Cus- 5 ter, State ofNebraska, have invented certain new and' useful Improvements in Well- Tools; and I do hereby declare the following to be a full, clear', and eXact description of the invention, such as will enable others skilled and use thesame.

vThis invention relates to well tools adapted to remove broken pump rods from deep well casings and has for an object to proy vide a tool which will effectively .engage and remove'various sizes of metal and wood pump rods.

A further object of the invention is to provide a tool having novel jaws for securely holding pump rods to enable the same to be unscrewed at the joints and removed in sections.

Withth'e above. objects in view the inven-' tion consists of certain novel details of construction and combination of parts hereinafter fully described and claimed, it. being understood that various modifications may be made in the minor details of construction within the scope of the appended claim.

In the accompanying drawings illustrating this vinvention:--l3`igure 1 is a side elevation. Fig. 2 is a longitudinal section with the jawsdotted in operative position. Fig. 3 is a cross section on line 3--3 Fig. 2.

Fig. 4 is a detail perspective view of the stationaryl jaw. Fig. 5 is a detail perspective view of the movable jaw. longitudinal section of a modified form for removing Wooden pump rods. Fig. 7 is a cross section on line 47--7 Fig. 6. Fig. 8 is a detail perspective view of the movable jaw shown in Fig. 6.

Referring now tothe drawings in which like characters of reference designate similar parts, the tool is shown to comprise a cylindricalcasing 10 .having a reduced upper end 411 and having the bore near the lower i end tapered to a lower feathered e 12. The

casing is formed in one side wit a pair of vertically alined slots 13 and'14.

Within the casing diametrically opposite the slots and in registration with the lower slot 13 is a fixed jaw 15 formed of a curved late whichis removably'secured to the cas- 65 mg means of screws 16 or otherwise, and

Specification of Letters Patent.

Fig.v 6 isv aA Patented Feb. 1v, 1914.

. Application led February 6, 1913. Serial No. 746,625.

A movable jaw 18 .formed `from. a' curved diametrically opposite the fixed jaw vand is provided on the outer face with spaced substantially triangular cam projections 19 and 20 which extend through thel slots 13 and 14 respectively, the outer inclined cam surfaces of the projection ridin upon the .bottom edges ofthe slots'whent e jaw is slid downwardly and forcing the jaw inwardly in the direction of the fixed jaw. The jaw is provided with a stem 21.which projects axially through` the reduced end 11 of the casing and forms means for manually moving the jaw. The jaw is provided on the inner face provided on the outer face with a stop lug 23 adapted to engage with the upper edge ment of thev jaw. j

To prevent rotation of the movable jaw in the casing a pair of opposite stop strips 24 and 25 are fixedly secured in the casing by rivets 26 or otherwise, each strip being substantially wedge-shaped in cross section as shown in Fig. 3 and bearing' with its in -ner fiat face against the adjacent end edge ofthe movable jaw whereby the aw is free to move inwardly between the strips but is positively held against rotation in the casing.

snugly fitted in thelower end of the casing and is removably secured thereto by means of a screw 28 or otherwise. The guide 'is formed with a tapered bore 29 which is of sufiicient diameter at the upper end to aline with the working faces of the fixed and movable jaws and flares outwardly toward the lower end to atea-ther lower edge 30 which is Hush Awith the feather lower edge of the casing. This guide directs the pump rod truly into the space between the fixed and movable jaws.

The movable jaw is normally disposed at its' upper limit of movement with the stop lug 23 in Contact with the upper edge of the lower-slot 13. The casing islet downll into the deep well, and as willpresently be debetween the working guide 27'l and lodges aces ofthefixed and movable jaws'.

with upwardly projecting/teeth 22'and is- `scribed is'` guided during such movement so that thepump rod .passes into the interior.

' The plate is slidably mounted within the casing of the lower slot 13v and limit upward move- A frusto-conical interiorv guide 27 is I o iit the bore of casing is of small diameter stein of the movable jaw is now tapped to move the movable jaw downward whereupon the cam projections simultaneously move the jaw inward with a resultant tight clamping of the pump rod to the fixed jaw. The casing may now be raised from the well to withdraw the pump rod, or in case there are joints in the pump rod to be unscrewed, the casing may first b e rotated to' unscrew the effected.

For guiding the casing l down into deep well casings of various diameters so as to center the inner guide 27 relatively to the pump rodwhich it is desired to remove, I provide exterior guide sleeves 32, 33 and 34 which telescope one within the surround the lower end of the casing '10. The inner sleeve 32 is removably fixed to the casing by set screws 32 or otherwise; the intermediate sleeve 33 is removably xed to the inner sleeve by set screws 33 or otherwise; and the' -outer sleeve 34 is removably fixed to the intermediate sleeve by set screws 3% or otherwise. Thebores 35, 36 and 37 of the sleeves flare outwardly and merge into each other to produce a conical guide wall as clearly shown in Fig. 2.

In use the outer guide sleeve 34 will snugly a relatively large well casing and hold the tool casing centered in the well casing while the flared bore of the sleeve will take up the upper end of the pump rod should it be lying against the I wall of the well casing and direct the same into the inner guide sleeve 27. Upon the outer sleeve 34 being removed, entry of the tool easing 10 into a well casing of medium diameter is facilitated. When the well the inner sleeve j 3.2 is removed as the tool casing 10 itself is formed of sutHcient diameter to fit the bore of a small pump casihg.

For removing wood pump rods the movable jaw, stationary jaw, and interior guide above described are removed and a movable jaw 38 such as is shown in Figs. 6 to 8 inclusive is substituted. The movable jaw in this instance is formed of a plate having a'v o single transverse upwardly projecting sharpened tooth 39 on th'e inner face near the lower end and having on the outer face near the lower end a substantially triangular cam projection 40 which engages with the Espas ai this joint beforeremoval of the rod may be other and I lower edge of the lower slot 13 and forces the tooth to penetrate and thus obtain a firm grip on the small ing the same to the inner face of the casing. To limit movement of the jaw a stop lug 41 fixed to the outer face of the jaw and ennumber of outer guide sleeves may be employed to promote the effective operation of the tool as also may any desired number of different sizes of interior' guides, without departing from the spirit or sacrificing any of the advantages of the invention. Furthermore, a leather or similar packing strip 43 may be inserted back of the fixed jaw to space the latter from the casing in order to facilitate the most effective working of the tool.

What is claimed, is

A well tool including a cylindrical casing having a reduced upper end and having the lower edge tapered internally to a feather edge to provide a guide surface, a jaw actuating rod projecting down throiigh sald reduced upper end and being o set at the lower end to ride along the side of said casing, a jaw integral with the offset end of said rod and having outwardly directed cam projections extending outwardly through slots in the side of said casing, a fixed jaw removably secured in said casing opposite the first named jaw, a` pair of opposite wedge-shaped plates removably secured to said casing between the edges of the first named jaw and said fixed jaw and having their opposing faces fiat whereby to positively prevent rotation of the first named jaw when being actuated by sald rod, and a removable 4flared guide sleeve on the lower end of said casing having the inner surface forming a continuation of the tapered inner surface of said casing.

lIn testimony whereof, I affix my signature, in the presence of two witnesses.

WILLIAM SCHILDWACHTER.

Witnesses:

O. G. BAUER, A. F. PHILLIPS.

. patent may be obtained for ve cents each, by addressing the Comminioler at Iltonu.

Washington, D. C." M

pump rod as well as clamp- 

